Highway & Safety Services is a certified minority business enterprise and disadvantaged business enterprise with the Maryland Department of Transportation, Prince George s County, Baltimore City and the Washington Metropolitan Area Transportation Authority. The company provides an array of services, including traffic control, signs, concrete, precast, erosion control and miscellaneous services, including maintenance, painting, benches, asphalt curb and bus shelters. The company also offers flagger certification classes. In June 2005, Pat Diamondidis, president of Highway & Safety Services, was inducted into the Maryland Highway Contractors Associations Hall of Leadership. The company is located in Gaithersburg, Md.